Broadband Subscriber Management Solutions Terms and Acronyms
AAA (authentication, authorization, and accounting)—An IP-based networking system that controls user access to
computer resources and manages the activity of users over a network.
ASM (Any Source Multicast)—A
method of allowing a multicast receiver to listen to all traffic sent
to a multicast group, regardless of its source.
BSR (broadband services router)—A router used for subscriber management and edge routing.
CoA (change of authorization)—RADIUS messages that contain information for dynamically changing
session authorizations.
CoS (class of service)—A
method of managing network traffic by grouping similar types of traffic
together and treating each traffic type as a “class” with
a defined service priority.
DHCP (Dynamic Host Configuration Protocol
)—A mechanism through which hosts using TCP/IP
can obtain protocol configuration parameters automatically from a
DHCP server on the network; allocates IP addresses dynamically so
that they can be reused when no longer needed.
IGMP (Internet Group Membership Protocol)—A host to router signaling protocol for IPv4 used to support
IP multicasting.
IS-IS (Intermediate System-to-Intermediate
System)—A link-state, interior gateway routing
protocol (IGRP) for IP networks that uses the shortest-path-first
(SPF) algorithm to determine routes.
LSP (label-switched path)—The
path traversed by a packet that is routed by MPLS. Some LSPs act as
tunnels. LSPs are unidirectional, carrying traffic only in the downstream
direction from an ingress node to an egress node.
MPLS (Multiprotocol Label Switching)—A mechanism for engineering network traffic patterns that
functions by assigning to network packets short labels that describe
how to forward the packets through the network.
MSAN (multiservice access node)—A group of commonly used aggregation devices including digital
subscriber line access multiplexers (DSLAMs) used in xDSL networks,
optical line termination (OLT) for PON/FTTx networks, and Ethernet
switches for Active Ethernet connections.
Multiplay—A networking
paradigm that enables the ability to add new and robust networking
services that individual subscriber can access.
OIF (outgoing interface)—An
interface used by multicast functions within a router to determine
which egress ports to use for fowarding multicast groups.
OSPF (Open Shortest Path First)—A link-state interior gateway protocol (IGP) that makes routing
decisions based on the shortest-path-first (SPF) algorithm (also referred
to as the Dijkstra algorithm).
PIM (Protocol Independent Multicast)—A multicast routing protocol used for delivering multicast
messages in a routed environment.
PPP (Point-to-Point Protocol)—Link-layer protocol that provides multiprotocol encapsulation.
PPP is used for link-layer and network-layer configuration. Provides
a standard method for transporting multiprotocol datagrams over point-to-point
links.
PPPoE (Point-to-Point Protocol over Ethernet)—Network protocol that encapsulates PPP frames in Ethernet
frames and connects multiple hosts over a simple bridging access device
to a remote access concentrator.
RADIUS (Remote Authentication Dial In User
Service)—A networking protocol that provides centralized
access, authorization, and accounting management for subscribers to
connect and use a network service.
Residential gateway—A
firewall, Network Address Translation (NAT) router, or other routing
device used as a customer premises equipment (CPE) terminator in the
home, office, or local point of presence (POP).
SSM (single-source multicast)—A routing method that allows a multicast receiver to detect
only a specifically identified sender within a multicast group.
set-top box—The end host
or device used to receive IPTV video streams.
Triple play—A networking
paradigm that dedicates bandwidth to data, voice, and video service.
VOD (video on demand)—A unicast streaming video offering by service providers that
enables the reception of an isolated video session per user with rewind,
pause, and similar VCR-like capabilities.
VSR (video services router)—A router used in a video services network to route video streams
between an access network and a metro or core network. The video services
router is any M Series Multiservice Edge Router or MX Series router
that supports the video routing package provided with JUNOS Software
Release 8.3 or later.
Published: 2010-05-03
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